Add simple test fixtures for Matlab.

test/fixtures/matlab_function.m

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+function ret = matlab_function(A,B)
+% Simple function adding two values and displaying the return value
+
+ret = A+B;
+% Display the return value
+disp('Return value in function');
+disp(ret);
+
+

test/fixtures/matlab_script.m

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+% Matlab example script
+
+%Call matlab_function function which resides in the same directory
+
+value1 = 5 % semicolon at end of line is not mandatory, only suppresses output to command line.
+value2 = 3
+
+% Calculate sum of value1 and value2
+result = matlab_function(value1,value2);
+
+disp('called from script')
+disp(result);